I've got a factory barrel that copper fouls very badly but just on the lands for the last 2-3". The grooves have no copper what so ever. I tried iosso on a patch after I had the copper cleaned out but it didn't seem to make a difference. the barrel feels a bit tighter at the muzzle running a patch through. Any solution to improve it?
copper fouling on lands
- Thread starter Rflshootr
- Start date
jackie schmidt
New member
To be specific, it’s just a Factory Barrel.
Try some of Tubbs Fire Lapping rounds. They won’t hurt the barrel, and just might help it.
Lap it, scrub it, do whatever you want to it but it helps to know WHY it's coppering at the muzzle and it ain't from a "tight bore"
The reason rifles copper at the muzzle is because one of several things, probably machining defects, is causing copper to be liquified ("vaporized," "gasified") back at the chamber end, flown down the barrel and re-deposited at the muzzle.
Generally speaking, the deposit you can visually see at the muzzle closely approximates the deposition in the first inch or two from the throat....
Generally speaking, coppering in a Match barrel is the result of imperfections (tears, edges, smears) back at the leade left by the throating reamer....
Generally speaking, coppering in a factory barrel is the result of.... well, have mama drag yerass down the paved road behind the pickup truck...deposition...
Generally speaking, IMO you're chasing your tail if it's a factory barrel, just wipe the copper out chemically (Witch's Brew, ME Copper Killer etc) and friggin' 'CHOOT IT!
Sweets 7.62 Solvent
Do NOT leave it in for longer than recommended.
It is potent stuff.
I would try and actual lead lap and very fine compound.
Maybe just rouge initially.
Cast the lap in the barrel.
Butch Lambert
Active member
Sweets may be potent? I purposely submerged a barrel stub in a container of Sweets for 15 years and it did absolutely nothing to it. I finally threw it out. As to what to do about a "factory" barrel, try Jackie's suggestion.
The ammonia evaporate out rather rapidly.
Butch Lambert
Active member
If it does, why did you post as you did? I guess mine evaporated from a sealed glass jar with sealed Mason Jar lid.
butch
try again
this time, in and out of sweets, as let some oxygen in to react.
not surprised nothing happened submerged. look at the titanic salt water, almost no oxygen/lo temp.
try again
this time, in and out of sweets, as let some oxygen in to react.
not surprised nothing happened submerged. look at the titanic salt water, almost no oxygen/lo temp.